🏴‍☠️ Code Bandit

Your AI-powered codebase companion that speaks your language

Code Bandit transforms how you interact with your codebase. Instead of memorizing complex commands or digging through documentation, just tell your AI assistant what you want to do in plain English – and watch the magic happen.

🚀 Why Code Bandit?

Stop context switching. Start conversing.

• 💬 Chat with your codebase — Ask questions like "What does this function do?" or "Add error handling to this API"
• 🔍 Instant code analysis — "Find all unused imports" or "Show me the database schema"
• ⚡ AI-powered refactoring — "Convert this class to TypeScript" or "Add unit tests for this module"
• 🛠️ Smart automation — "Set up ESLint" or "Generate API documentation"
• 🔒 Safe by default — Built-in safety modes and confirmation prompts
• 🎯 Multiple interfaces — CLI, VS Code extension, and programmatic API

Perfect for:

• 🧑‍💻 Developers exploring new codebases
• 🏗️ Code reviews and refactoring sessions
• 📚 Learning from existing projects
• 🐛 Debugging and troubleshooting
• 📝 Documentation and analysis
• 🔄 Automated commit message generation

⚡ Quick Start

1. Install globally

npm install -g @janole/code-bandit

2. Jump into any project

cd your-awesome-project
coba -p ollama -m llama3.2:3b

3. Start chatting!

You: Show me the main entry points of this project
AI: I found 3 main entry points...

You: Add error handling to the API routes
AI: I'll add comprehensive error handling. Let me update the files...

🛠️ Installation & Setup

Global Installation

npm install -g @janole/code-bandit

One-time Usage

npx @janole/code-bandit -p ollama -m magistral:24b

VS Code Extension

# Install the official VS Code extension
coba install-extension

# Or install a specific version
coba install-extension --tag v0.3.13

Quick Examples

With OpenAI:

# Set your API key
export OPENAI_API_KEY="your-key-here"
coba -p openai -m gpt-5

With Ollama (local):

# Install Ollama first: https://ollama.ai
ollama pull llama3.2:3b
coba -p ollama -m llama3.2:3b

With Google Gemini:

export GOOGLE_API_KEY="your-key-here"
coba -p gemini -m gemini-2.5-pro

With Anthropic Claude:

export ANTHROPIC_API_KEY="your-key-here"
coba -p anthropic -m claude-sonnet-4-20250514

🎯 What Can Code Bandit Do?

🔍 Code Analysis & Exploration

You: "What's the architecture of this project?"
You: "Find all TODO comments"
You: "Explain this complex function in simple terms"

✏️ Smart Code Generation

You: "Add TypeScript types to this JavaScript file"
You: "Generate unit tests for the user service"
You: "Create a README for this component"

🔧 Refactoring & Cleanup

You: "Extract this logic into a reusable utility"
You: "Remove unused imports from all files"
You: "Convert this callback to async/await"

🚀 Project Setup & Tooling

You: "Set up ESLint with TypeScript"
You: "Add a pre-commit hook for formatting"
You: "Configure Jest for testing"

📝 Git & Documentation

# One-shot commit message generation
echo "Brief context about changes" | coba exec "Generate a conventional commit message" -o -

# Interactive documentation help
You: "Update the API documentation for the new endpoints"
You: "Generate a changelog from recent commits"

🎛️ Command Options

Commands

• coba or coba chat [options] — Start an interactive chat session (default command)
• coba exec <message...> [options] — Run a one-off, non-interactive request
• coba install-extension [--tag <tag>] — Install the official VS Code extension

Global/chat options

| Option | Description | Default / Examples | |--------|-------------|--------------------| | -p, --provider <provider> | Model provider to use | env: CODE_BANDIT_PROVIDER (e.g. ollama, openai, anthropic, gemini) | | -m, --model <model> | Model identifier | env: CODE_BANDIT_MODEL (e.g. gpt-5, gpt-oss, claude-sonnet-4-20250514) | | -u, --api-url <url> | API base URL for provider | e.g. self-hosted endpoint | | -k, --api-key <key> | API key passed to the provider | Your API key | | --context-size <size> | Max context window (tokens) used for chat history | Default: 8192 for ollama, provider default otherwise | | --max-messages <count> | Max number of messages to retain in history | Default: 10 | | -R, --repo-path <path> | Git repository directory to work in | Default: . | | --read-only | Use read-only tool mode (no file changes) | Safe exploration | | --write-mode | Enable YOLO write mode for tools (destructive) | Use with caution | | --no-agent-rules | Disable loading of AGENTS.md, .cursorrules, etc. | — | | --debug | Show debug information | — |

Chat-only options

| Option | Description | |--------|-------------| | -C, --continue-session <filename> | Continue with a previous session file | | --start-message <message> | Start the chat by sending an initial message | | --no-stream | Disable streaming responses |

Exec-only options

| Option | Description | |--------|-------------| | -o <file> | Write the model's final text output to a file (- for stdout) |

Notes:

• exec also reads from stdin and appends it to the message. Example: echo "extra context" | coba exec "Summarize this" -p openai -m gpt-4o.
• Environment variables CODE_BANDIT_PROVIDER and CODE_BANDIT_MODEL can be used to set default provider/model.

VS Code extension

| Command | Description | |---------|-------------| | coba install-extension --tag <tag> | Download and install the official VS Code extension. Use --tag vX.Y.Z for a specific version or omit for latest. Requires the code CLI in PATH. |

Extension Features:

• Smart Commit Messages: Auto-generate conventional commit messages from your staged changes
• Keyboard Shortcut: Ctrl+Alt+C (Windows/Linux) or Cmd+Alt+C (Mac)
• Configurable Models: Choose your preferred AI model for commit generation

🔒 Safety First

Code Bandit is designed with safety in mind:

🛡️ Three Safety Modes

• confirm (Default) — Asks permission before any file changes
• read-only — Pure analysis mode, no modifications allowed
• yolo — Full automation mode (use in git repositories!)

🐳 Docker Sandboxing

• All shell commands run in isolated Docker containers, protecting your system from potentially harmful operations.

📋 Always Available Tools

• list-directory — Browse project structure
• read-file — Examine file contents
• find-files — Search by patterns (**/*.ts, src/**/*.js)
• search-in-files — Find text across your codebase
• git-diff — View git changes
• git-log — Check commit history
• copy-to-clipboard — Copy content for external use

⚡ Write Mode Tools (requires --write-mode)

• write-file — Create or modify files
• delete-file — Remove files permanently
• move-file — Rename or relocate files
• create-directory — Create new folders
• execute-command — Run shell commands

🎯 Best Practices

• Always use git: Work in git repositories so you can easily review and revert changes
• Review changes: Use git diff to review all modifications before committing
• Session continuity: Use --continue-session to maintain context across multiple interactions

🏗️ Built With Modern Tech

• 🔥 TypeScript — Type-safe development experience
• ⚛️ Ink + React — Beautiful, responsive terminal UI
• 🦜 LangChain.js — Multi-provider AI integration with tool calling
• ⚡ ESBuild — Lightning-fast builds and bundling
• 🎯 Commander.js — Robust CLI argument parsing
• 📱 VS Code API — Native editor integration

🤝 Contributing

We love contributions! Code Bandit is actively developed and there's exciting work ahead.

git clone https://github.com/janole/code-bandit.git
cd code-bandit
npm install
npm run dev

Check out our development guide for more details.

📈 Project Status

🚧 Alpha Release — Code Bandit is experimental but rapidly evolving. We recommend using it in git repositories so you can easily review and revert changes.

Recent Additions:

• 🎯 VS Code extension with smart commit messages
• 📝 Comprehensive command options and session management
• 🔧 Enhanced tool safety and file system operations
• 📊 Multiple output formats and stdin support
• 🌐 Expanded AI provider support

Roadmap:

• 🌐 Web interface and dashboard
• 🔌 Plugin ecosystem for custom tools
• 📱 Mobile companion app
• 🤖 Advanced code understanding and suggestions

📄 License

MIT © Jan Ole Suhr

⭐ Star us on GitHub if Code Bandit makes your coding life easier!

🛠️ Report Issues • 💬 Discussions • 📚 Wiki